Machine for spinning rayon



Se t. 13, 193;. HAASE 1,877,397

MACHINE FOR SPINNING RAYON Fiied Nov. 4, 1930 2 Sheets-Sheet 1.

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[2 En f I I g I, 7 I awe-urn? Sept. 13, 1932. c. HAASE MACHINE FOR SPINNING RAYON Filed NOY. 4, 1930 2 Sheets-Sheet 2 X x x" Patented Sept. 13, 1932 UNITED STATES PATENT OFFICE W CARL nnnsnorsonoimu, NEAR CHEMNITZ, GERMANY, ASSIGNOR To AunoLnrLG;

or CHEMNITVZ, GERMANY, A JOINT-STOCK COMPANY on GERMANY MACHINE FOR SPINNING RAYON Application filed November 4, 1930, Serial No. 493,447, and in GermanyIuIy 16, 1927a":

My invention relates to improvements in machines for spinning rayon and more particularly in machines of the type in which for 1 g each spinning nozzle a plurality. of bobbins are provided which are alternately thrown into position for winding the thread thereon, and in which further the driving mechanism for'the bobbins is constructed so that the velocity of the bobbin is gradually reduced as the thread is wound thereon, so that the circumferential velocity of the bobbin or body ofsilk and thereforeth-e tension of the thread remainconstant. In machines of this type now in use two bobbins are mounted on a lever which is adapted to be rocked with the bobbins carried thereby into and out of spinning position. i v

I The object of the improvements is to provide a machine of this class which is simple in construction and reliablein operation,'and with this object in view my invention consists in operating the mechanism for varying'the velocity of the bobbin and for rocking the bobbins into and out of spinning position from a common rotary shaft, which shaft will be described hereinafter as the counter shaft. The velocity of the said counter shaft can be-varied within wide limits, and it controls the time of the filling operation of each bobbin, and the number ofthe rotations thereof needed for filling the same, it starts the exchanging of the bobbins whenever a bobbin has been filled, and it sets the operating mechanism for the bobbins so that at the beginning of a spinning operation the bobbin is rotated at the desired initial velocity.

For the purpose of explaining the inven tion an example-embodying the same has been shown in the accompanying drawings in which i the same reference characters have been used in all the views to indicate corresponding parts. In said drawings,

Fig. 1- is a sectional elevation taken on the line I-I of Fig. 3 and showing the spinning machine, i

' "Fig. 2is an elevation of the machine showingthe gearings thereof,

Fig. 3 is an elevation viewed from the left inFig. 1 and showing certain parts illustrated in the said figure,

Fig. 4 is an elevation of the machine show ing particularly the gearings, 1 L Fig. 5 is a somewhat diagrammatical plan view showing the relative position of the bobbins and the shafts for driving and; rocking 5 thesame, V v

Fig. 6 is a detail view. partly in section and on an enlarged scale and showing certain parts illustratedin Fig. 4, and

Fig. 7 is an elevation partly in section showing certain details. a i In the example shown in the figures, on the frame of the machine a motor M is mounted which rotates at uniform velocity, and which drives a gear wheel M through the inter: mediary of a reducing-gearing Q such as -a worm gearing M a shaftM an intermediate gear wheel M and a gear wheel M. On the shaft of the gear wheel M? an eccentriclVf is mounted, and the rod M? of the saideccentric is jointed to a lever M fixedto a shaft M rockingly mounted on brackets M secured to the frame of the machine. Theshaft M is connected with a lever M 'whichenga cs 31 liverdlilf rockingly moulrited on a brac et an carryin a awl en a in a ratchet wheel P 1 1 To the shaft of the ratchet wheel M a worm M" is secured which is in engagement with a worm gearing M secured to a shaft 1, which shaft is the counter shaft adapted gradually-to. reduce the velocity of the bobbins winding the thread thereon and to rock the member carrying the bobbins for moving the bobbins respectively into and out of .a spinning position. a 1 i 1 The mechanism for imparting, rotary movement to the bobbinsis constructed as follows: i V 'f.

On the counter shaft 1 acam-disk -i-is mounted which is in engagement'with a lag 2' secured to a lever 2' rockingly mountedon the frame of the machine. The said lever is jointed to a link 2' guided at its top end ina sleeve 71 secured to the'frame, To anQeye 11 secured to the link 2' a rod 2' is connected which is jointed to a rockable lever The lever z" is connected by a link i with a lever is connected with the brushes of a subsidiary electric motor H, the connection beingsuch that by the rocking movement imparted to the shaft of the lever 70 by the mechanism so far described the brushes of the subsidiary motor H are shifted in circumferential direction, thus changing the velocity of the motor. Thus by the rotary movement of the earn 2' in the direction of the arrow P the'velocity of the armature of the motor H is gradually reduced, and it is at itsminimum when the reduced until the parts are again in the position shown in Fig. 4. c When the parts are in the position shown in Fig. 4 and the lug 71 passes from thehighest part of the cam i to the part of smallest radius, the position of the bobbins is reversed. As appearsfrom Figs. 1 and?) the bobbins are mounted in pairs a and a on a common rookable carrier 03. The machine is provided atbo'th sides with sets of bobbins as is shown 1 so that always two pairs of bobbins a and a have the samemovement and the same position. The carriers (Z are mounted on a shaft al supported in, a bearing member d secured to the frame of the machine. To the shaft: d a worm gearing m is secured which'is in mesh with a worm 011. provided on a shaft n. On the spindle of eachbobbin a worm gearing f is mounted. In the opera tion of the machine the worm gearing f of the bobbin located in its lowermost position is in mesh with a worm f provided on a shaft 7. In the position of the parts shown in Fig; 1 thebobb in a is in spinnin position. In machines of the type shown in Fig. 1 in which sts o'fbobbins are provided at opposite sides of the frame two shafts f are provided.

The carriers d are adapted to be rocked for reversing the bobbins a and a from the counter shaft 1 through the intermediary of the rod 6 To the top part of the said rod 2' alug 71 is secured, which cooperates with a pawlry rockingly mounted on a'bellcrank lever w supported on a brackets/ secured to a frame member 00 a springy 'being attached to the pawl y and tending to hold the same with itstailend in engagement with a pin se'c'uredto the lever w, and to rock the bell .erahk lever x with itsleft hand end down- 911 and when thereafter the rod drops by reason ofthe lug i falling from the portion of largest radius ofthe cam ion the portion cf smallest radius, the lug 2' rocks the lever a in clockwise direction. Theleft hand conical coupling member 0, and normally it engages a lug 9 thereof, as is shown in Figs. 6 and 7. The disk Q and the coupling member 0 are axially shiftable and non-rotatable on a shaft 6 mounted on'the framefof the machine. To the said shaft aring e is hired which provides a support for a coiled spring 1" acting on the disk Q, and tending to shift the same aXially'of the shaft 6. On the shaft 6 a coupling member 0 is rotatable which cooperates withthe coupling member 0, the spring 1" tending to force the coupling member 0 into engagement with the coupling member 0 Normally the disk Q is arrested by the bell crank lever 02 in the position shown in Fig. 7 in which the coupling members 0 and 0 are out'of coupling engagement. But when the bell crank lever a is rocked by the rod 2' movingdownward'ly into position for releasing the disk Q, the spring 7" shifts the oouplin with the member 0 The shaft of the subsidiary motor Hoar ries a pinion g which is in mesh with a gear wheel 9 secured to one of the shafts f.. As hasbeen described above, the said shaft drives g member 0 into coupling engagement the bobbins a, a* through the intermediary of worms 7 and worm gearings f at gradually reduced velocity. V To the shaft 7 a pinion g is secured which is connectedthrough gear wheels 9* with a gear wheel g niounted on the hub of the coupling member 0 Thus the said coupling member 0 is continuously rotated. from'the subsidiary motor H. I v 5 WVhen the rod 2' moves downwardly the bell crank lever 00 releases the disk Q, so that the coupling members-oand 0 are thrown into coupling engagement with each other, and rotary movement is transmitted from the sub sidiary motor Hto the. shaft 6. To the said shaft a gear wheel 6 is secured which is connected with the shaft n by a train of gear wheels 6?. The sh aftn is connected by means of a worm m and a worm gearing-m with the shaft d on which the carriers 03 are mounted, so that the shaft d is rocked through-an.

angleof 180 when the coupling memberso, 0 are .in couplingv engagement. bobbins a and a are reversed, the bobbin a whichbefore was in operative beingset into spinning position", :while the bobbin a on which the thread has been wound is brought into inoperative position in which it can be removed from thecarrier and replac'ed by an empty bobbin. 'l/Vhen the bobbins a or a are in spinning position they rotate in a trough Z2 applying a suitable treating liquid to the silk. .After the bobbinhas again been filled with silk the shaft 6Z is fagain rocked through an angle of 1809,; -Thereby the thread rocking; through the thread guide-e i torn and placed on the empty bobbin Thus the brought into spinning position. The operation of the parts controlled by the bell crank lever 02 and the disk Q is such that after the lug i has rocked the bell crank lever, and the lever 00 has released the lug g, the spring 11 returns the lever into the position shown in Figs. 4 and 6, so that upon further rotation of the disk Q, the gradually ascending lug g engages the lever w, so that the coupling member 0 and the disk Q are forced to the right against the tension of the spring 1".

As appears from the foregoing description a single controlling mechanism is provided for the sets of bobbins a, a located at opposite sides of the machine, the said bobbins being rotated from the shafts f, f driven from the subsidiary motor H through the intermediary of the gearing 9 g and the shafts f, f driving the sets of bobbins located at opposite sides of the machine being connected with each other by suitable gear wheels shown in Fig. 4. Further, the said controlling mechanism is adapted to rock the carriers d of the sets of bobbins located at opposite sides of the machine, saidcarriers being respectively secured to the same shaft (Z 1 claim:

1. In a machine for spinning rayon, the combination with a movable carrier adapted to support a pair of bobbins, means for moving said'carrier to place either of said bobbins in operative spinning position, mechanism for rotating the bobbin thus rendered operative, means for varying the speed of rotation of said bobbin, and a movable cam and follower connected with both of said means for operating the same in timed relation.

2. In a machine for spinning rayon, the combination with a rockable carrier adapted to carry a pair of bobbins, of means for rocking said carrier for alternately throwing said bobbins into and out of spinning position,

mechanism for rotating the bobbin occupying the spinning position, a rotary member,

' coupling mechanism for connecting said rotary member with said rocking means, a spring acting on one of the coupling members and tending to shift the same into coupling engagement with the other coupling member, an abutment member adapted to holdsaid spring actuated coupling member in noncoupling position, controlling mechanism adapted to throw said abutment member out of arresting position, and means controlled by the driven member of the coupling mechanism for returning said spring actuated coupling member into non-coupling position.

3. A machine for spinning rayon, comprising a r-ockable carrier adapted to carry a pair of bobbins, means for rocking said carrier for alternately throwing said bobbins into and out of spinning position, mechanism for rotating the bobbin occupying the spinning position, a rotary member, a coupling mechanism for connecting said rotary member with abutment member out of arresting position, i and a camconnected with sa1d spr ng pressed coupling member and adapted to engage said abutment member for retracting the spring pressed coupling member out of coupling position. I I

4. A machine for spinning rayon, comprising a rotary member, adaptedto carry a bobbin for winding thereon the thread, an elec-; tric motor forrotating said bobbin, means for varying the velocity of the rotation of said motor comprising a controlling cam member formed with a gradually ascending cam face and an abrupt portion, and a follower engaging said cam face and operatively connected with the motor brushes for shifting the position of the latter.

5. A machine for spinning rayon, compris ing a rockable carrier adapted to carry a pair of bobbins, means for. rocking said carrier for alternately throwing said bobbins into and out of spinning position, mechanism for rotating the bobbin occupying the spinning position, and common controlling means for gradually reducing the velocity of said rotating mechanism and for operating said rocking means, said controlling means comprising a rotary cam having a gradually ascending cam face and an abrupt portion connecting the portions of largest and smallest V radii of saidcam, a rod sliding on said cam and connected with sa1d rotating mechanlsm and adapted, when moving from the portion of the cam of largest radius to the portion of smallest radius, to operate said rocking means. i

6. A machine for spinning rayon, comprising a rockable carrier adapted to carry a pair ofbobbins, means for rocking said carrier for alternately throwing said bobbins into and out of spinning position, mechanism for rotating the bobbin occupying the spin- 'ning position, an electromotor connected w1th sa1d rotating means, coupling mechanism adapted to connect said electrometer with said rocking means and means including a rotary controlling member adapted gradually to vary the velocity of the rotation of said electromotor and to setsaid coupling means into coupling position.

7. A machine for spinning rayon, comprising a rockable carrier adapted to carry a pair of bobbins, means for rocking said carrier for alternately throwing said bobbins into and out of spinning position, mechanism for rotating the bobbin occuping the spinning position, an electromotor connected with said rotating means, coupling mecha signature.

'anism adapted to connect said ele'ctromotor 'Wlth said rocklng mechanism, a rotary controlling cam having a gradually ascending cam face and'an abrupt portion connecting the parts of largest'andsmallest radii of said cam face, a rod engaged by said cam face, means connected with said rod for gradually =reducing the velocity of said electromotor,

and means including a device on saidrod operative when the rod passes from the por-' tion of the cam of largest radius to the portion of smallest radius for throwing said coupling mechanism into coupling position.

In testimony whereof I hereunto aflix my CARL LHAASE.

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